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| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2019-07-05 09:31:00 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-07-09 10:25:02 +0200 |
| commit | f458579ede0b721418f7fc9f0eb624ca058ea0ea (patch) | |
| tree | b0cf508c008abc7c29ac7974a486363a40f4e415 /include/drm/drm_mode_config.h | |
| parent | drm/fb-helper: Map DRM client buffer only when required (diff) | |
| download | wireguard-linux-f458579ede0b721418f7fc9f0eb624ca058ea0ea.tar.xz wireguard-linux-f458579ede0b721418f7fc9f0eb624ca058ea0ea.zip | |
drm/fb-helper: Instanciate shadow FB if configured in device's mode_config
Generic framebuffer emulation uses a shadow buffer for framebuffers with
dirty() function. If drivers want to use the shadow FB without such a
function, they can now set prefer_shadow or prefer_shadow_fbdev in their
mode_config structures. The former flag is exported to userspace, the
latter flag is fbdev-only.
v3:
* only schedule dirty worker if fbdev uses shadow fb
* test shadow fb settings with boolean operators
* use bool for struct drm_mode_config.prefer_shadow_fbdev
* fix documentation comments
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/315834/
Diffstat (limited to 'include/drm/drm_mode_config.h')
| -rw-r--r-- | include/drm/drm_mode_config.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 759d462d028b..f57eea0481e0 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -853,6 +853,13 @@ struct drm_mode_config { uint32_t preferred_depth, prefer_shadow; /** + * @prefer_shadow_fbdev: + * + * Hint to framebuffer emulation to prefer shadow-fb rendering. + */ + bool prefer_shadow_fbdev; + + /** * @quirk_addfb_prefer_xbgr_30bpp: * * Special hack for legacy ADDFB to keep nouveau userspace happy. Should |